SEO Offers in your inbox?

Everyone gets them, some ignore them, others wonder if there is any validity to them.  Here’s a recent blog post from Matt Cutts (Google) that should answer any questions…
Folks at Google get cold-call emails out of the blue just like everybody else. Here’s an email that a colleague of mine got recently:
I was on your website www.google.com and wanted to shoot you a quick note. I think I can make a few changes (aesthetically and/or SEO – wise) to make your site convert more visitors into leads and to get it placed higher in the organic search results, for a few of the select terms.
This is NOT like one of those foreign emails you probably get in your inbox every day. Just to be upfront I have 3 agents that work with me for development /SEO.
I would just need to know which (if not both) services you’re open to checking out information about, either web design or SEO. Would you be open to seeing more brief info / quote for what I would like to accomplish?
Regards,
XXXXXX XXXXX
So this person is offering help to convert Google visitors into leads. Or, you know, to improve Google’s rankings in organic search results. Sigh.
Earlier this week, I got a different email that said
I would like to extend our knowledge to your audience in the form of a guest post [sic]. This post will be written by a college educated writer fluent in English.
To recap we will provide-
– 100% original guest post with statical [sic] data and studies from professional writers.
“Here’s my rule of thumb: if someone sends you an email with an SEO offer out of the blue, be skeptical.” Matt Cutts (Google)
Thanks Matt, we agree 100%!